Automatic vending machine



Nov. 29, 19 32.

SH, GOLDSCHMIDT 1,889,406 AUTOMATIC VENDING MACHINE Filed Jan. 10, 1950sausa es, but the construction Patented Nov. 29, 1932 UNITED STATESPATENT] OFFICE SVEN mun eorinscnmnr, or COPENHAGEN, DENMARK nuromarrcVENDING. MACHINE Application filed Ian nary 10, 1930, Serial No.419,970, and in Denmark .Tanuary 21, 1929.

My invention relates to improvements in automatic vending machinesadapted to deliver goods in heated condition.

The object of my invention is to provide a simple vending machine ofthis kind, in

which eatable goods, f. i. sausages, claiming a careful treatment can besold in such a condition, that their pleasant flavor is preserved. oreparticularly'the object of my invention is to provide a vending machineof the kind stated, in which goods claiming a treatment with hot waterorsteam can be sold, and wherein such goods can be heated, boiled orotherwise treated by heat, and can be maintained hot for someconsiderable time.

Another object of my invention is to provide a vending machine of thenature specified, in whichv the temperature is easily regulated inaccordance with the conditions required by the goods treated.

A third object is to provide a vending machine as stated above, which ischeap in use, easy to manipulate and simple and cheap to construct. I

These advantages are attained by the auto matic vending machine, oneconstruction of which is shown by way of example on the drawing. In theconstruction shown the machine is especially adapted for selling hot mayeasily be modi ed, without transgressing' the frames I covered at top bya of the invention, so as to fit other goods.

On the drawing Fig. 1 shows the machine in front elevation, Fig. 2 ahorizontal section of the same, Fig. 3 a vertical section of a drawer,and F i 4 a wiring diagram for the electric insta ation.

he machine consists of an outer casing 1, roof 11 and supported atbottomby a base 12. The casing 1 is made from sheet metal and is fittedon the inside with a heavy layer of insulating material 13, an internalspace 14 being left for the goods. The front of the casing-is-fittedwith a door 15 giving access to the space 14. In the construction shownthe front of themachine is I fitted with drawers 2,,which are similarlyinsulated against loss of heat by means of insulating material 21, thesaid abling in known manner the bottommost drawers enparcel ofmerchandise 4 to be withdrawn from the pile of parcels, which in theexample shown consist of pasteboard tubes with sausages 41 insertedtherein.

The machine is maintained heated by electrio heating bodies, whichoperate partly directly by radiation and by heating the air in thechamber 14, and partly by direct contact with the articles to be heated,and partly bygeneration of steam which able pipes is directed into themam chamber 14 of the machine. In the construction shown the mainchamber 14 is fitted with lamps 3, which by wires 31 are connected tothe'main wires 32 of the machine, which in suitable manner are connectedup to the municipal lines of supply. The drawers 2 are fitted withheating bodies 33, which by means of sliding contacts 34 areconnected-to wires 35 branching off from the main wires 32. K The base12 of the machine contains a small steam boiler 5, which communicateswith the chamber 14 by way of steam pipes 51. In the steam boiler 5 anelectric heating body 35 is inserted, which by wires 37 is connected tothe main lines 32. By means ofa pipee55 the steam boiler 5 is connectedto a large water tank 52 containing pure cold water. The bottom of thechamber 14 is fitted with a funnel 53 with a return pipe 54. The funnel53 and the return pipe-54 are made from some heatconducting material,for instance metal, and

serve to return any condensed vapor from the chamber 14 to the tank 52.Furthermore the funnel 53 will have about the same tempera'ture as thecold water in the tank 52, and the vapor in the chamber 14 willtherefore mostly be condensed there.

In the wires 31 leading to the heating bodies 3 a thermoregulator 38 isinserted, which cuts oil the current when the temperature in the chamber14 becomes too high. The wires 37 for the heating body 36 in the boiler5 are similarly fitted with a thermoregulator 39, which does not closethe steam-generating current until the temperature in the chamber 14 hasbecome so high that the steam produced does not condense on the goods.

The machine operates in such a manner that the parcels of merchandise4inserted by way of suit- 60 into the chamber 14 by way of the door 15 inmanner known per se can be withdrawn, singly, when a coin is insertedinto one of the coin slots 16, whereby a corresponding one of thedrawers 2 is released. When the circuit of the machine is closed thecurrent passes, at the start, only through the heating bodies 3, wherebythe temperature in the chamber 14 increases. When the temperature hasreached a certain point, the temperature regulator 39 closes the circuitof the heating body 36 in the steam boiler 5, whereby the water in thissmall boiler quickly reaches the boiling point, whereafter steamcommences to pass out through the pipes 51. These pipes are fitted withholes on the sides. so that steam flows into the chamber 14 throughoutthe entire height of the same. As the chamber 14 is previously heated nocondensation of steam will take place on the goods nor on the walls, butmainly in the funnel 53 from Where the condensed water will be directedback to the tank 52.

It is obviously not necessary to use all thehere shown heating devicesfor all purposes. For some kinds of goods it will be suflicient to usesolely the heating bodies 3 or the heating bodies 33, and for othergoods it Will be suitable to use only the steam heating.

I claim:

Automatic vending machine comprising in combination a heat-insulatedchamber adapted to contain parcels of goods to be sold, means towithdraw from the chamber a single parcel at a time after insertion of acoin inthe vending machine, and electric heating bodies, a steamgenerator with electric heating bodies being provided outside of thesaid chamber, and steam pipes leading from the steam-generator to thesaid chamber in the vending machine.

1 In testimony whereof I afiix my signature.

SVEN HARALD GOLDSGHMIDT.

